<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card class="box-card">
            <!-- 搜索 -->
            <el-row :gutter="15">
                <el-col :span="7">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- /搜索 -->
            <!-- 列表 -->
            <el-table :data="userList" style="width: 100%" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column prop="username" label="姓名"></el-table-column>
                <el-table-column prop="mobile" label="手机号"></el-table-column>
                <el-table-column prop="email" label="邮箱"></el-table-column>
                <el-table-column prop="mg_state" label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="changeState(scope.row)"></el-switch>
                    </template>
                </el-table-column>
                <el-table-column prop="role_name" label="权限"></el-table-column>
                <el-table-column label="操作">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSettingDialogVisible(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- /列表 -->
            <!-- 分页 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
            <!-- /分页 -->
            <!-- 添加用户 -->
            <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
                <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                    <el-form-item label="用户名" prop="username">
                        <el-input v-model="addForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="密码" prop="password">
                        <el-input v-model="addForm.password"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="addForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="addForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="addDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="addUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- /添加用户 -->
            <!-- 修改用户 -->
            <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="40%" @close="editDialogClosed">
                <el-form label-width="70px" :model="editForm" ref="editFormRef" :rules="editFormRules">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username"></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="editDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="editUser">确 定</el-button>
                </span>
            </el-dialog>
            <!-- /修改用户 -->
            <!-- 分配角色 -->
            <el-dialog title="提示" :visible.sync="settingDialogVisible" width="40%" @close="settingDialogVisibleClosed">
                <div>
                    <p>当前的用户：{{userInfo.username}}</p>
                    <p>当前的角色：{{userInfo.role_name}}</p>
                    <p>
                        分配新角色：
                        <el-select v-model="selectedRoleId" placeholder="请选择角色">
                            <el-option v-for="item in roleList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
                        </el-select>
                    </p>
                </div>
                <span slot="footer" class="dialog-footer">
                    <el-button @click="settingDialogVisible = false">取 消</el-button>
                    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
                </span>
            </el-dialog>
            <!-- /分配角色 -->
        </el-card>
    </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;

            if(regEmail.test(value)) {
                // 合法邮箱
                return cb();
            }

            // 验证失败
            cb(new Error('请输入合法邮箱'));
        }

        // 验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            // 验证手机号的正则表达式
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if(regMobile.test(value)) {
                return cb();
            }

            cb(new Error('请输入合法的手机号'));
        }
        return {
            queryInfo: {
                query: '', // 查询参数
                pagenum: 1, // 当前页码
                pagesize: 2 // 每页显示条数
            },
            userList: [], // 用户列表
            total: 0, // 总条数
            addDialogVisible: false, // 添加用户的对话框
            // 添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加用户的表单数据验证
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    {
                        min: 3,
                        max: 10,
                        message: '用户名的长度在 3~10 个字符之间',
                        trigger: 'blur'
                    }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    {
                        min: 6,
                        max: 15,
                        message: '密码的长度在 6~15 个字符之间'
                    }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            editDialogVisible: false, // 修改用户的对话框
            editForm: {}, // 修改用户的表单数据
            // 修改用户的表单数据验证规则
            editFormRules: {
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            settingDialogVisible: false, // 分配角色的对话框
            userInfo: {}, // 用户信息
            roleList: [], // 角色列表
            selectedRoleId: '' // 选中的值
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        // 获取所有用户
        async getUserList() {
            const { data: res } = await this.$http.get('users', {
                params: this.queryInfo
            })
            if(res.meta.status !== 200) {
                return this.$message.error('获取用户列表失败');
            }
            this.userList = res.data.users;
            this.total = res.data.total;
            console.log(res);
        },
        // 更改状态
        async changeState(userInfo) {
            const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`);
            if(res.meta.status !== 200) {
                return this.$message.error(res.meta.msg);
            }
            this.$message.success(res.meta.msg);
        },
        // 监听更改当前显示条数
        handleSizeChange(newSize) {
            console.log(newSize);
            this.queryInfo.pagesize = newSize;
            this.getUserList();
        },
        // 监听当前页码
        handleCurrentChange(newPage) {
            console.log(newPage);
            this.queryInfo.pagenum = newPage;
            this.getUserList();
        },
        // 对话框关闭
        addDialogClosed() {
            this.$refs.addFormRef.resetFields();
        },
        // 添加用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if(!valid) return;
                const { data: res } = await this.$http.post('users', this.addForm);

                if(res.meta.status !== 201) {
                    this.$message.error(res.meta.msg);
                }

                this.$message.success(res.meta.msg);
                // 隐藏对话框
                this.addDialogVisible = false;
                // 重新获取用户列表数据
                this.getUserList();
            });
        },
        // 显示修改用户的对话框
        async showEditDialog(id) {
            const { data: res } = await this.$http.get(`users/${id}`);
            this.editDialogVisible = true;

            if(res.meta.status !== 200) {
                this.$message.error(res.meta.msg);
            }

            this.$message.success(res.meta.msg);
            this.editForm = res.data;
        },
        // 监听修改用户的对话框关闭
        editDialogClosed() {
            this.$refs.editFormRef.resetFields();
        },
        // 修改用户
        editUser() {
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return;
                const { data: res } = await this.$http.put(`users/${this.editForm.id}`, {
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                });

                if(res.meta.status !== 200) {
                    this.$message.error(res.meta.msg);
                }

                this.$message.success(res.meta.msg);
                this.editDialogVisible = false;
                this.getUserList();
            });
        },
        // 删除用户
        async removeUserById(id) {
            const conf = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err);
            
            // 确认：confirm；取消：cancel
            if(conf !== 'confirm') {
                return this.$message.info('取消删除');
            }

            const { data: res } = await this.$http.delete(`users/${id}`);

            if(res.meta.status !== 200) {
                return this.$message.error(res.meta.msg);
            }

            this.$message.success(res.meta.msg);
            this.getUserList();
        },
        // 监听分配角色的对话框
        settingDialogVisibleClosed() {
            this.selectedRoleId = ''
            this.userInfo = {}
        },
        // 显示分配角色的对话框
        showSettingDialogVisible(userInfo) {
            this.userInfo = userInfo;
            this.getRoleList();
            this.settingDialogVisible = true;
        },
        // 获取角色列表
        async getRoleList() {
            const { data: res } = await this.$http.get('roles');

            if(res.meta.status !== 200) {
                return this.$message.error(res.meta.msg);
            }

            this.$message.success(res.meta.msg);
            this.roleList = res.data;
        },
        // 分配角色
        async saveRoleInfo() {
            if(!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色');
            }

            const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId });

            if(res.meta.status !== 200) {
                return this.$message.error(res.meta.msg);
            }

            this.$message.success(res.meta.msg);
            this.getUserList();
            this.settingDialogVisible = false;
        }
    }
}
</script>

<style lang="less">
.el-breadcrumb {
    margin-bottom: 15px;
}
.el-table {
    margin: 15px 0;
}
.el-select {
    margin-top: 5px;
}
</style>